Two-port amplifier model practice problems
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Read the Amplifier class notes.

For the amplifier circuit shown, R_S = 8.2 kΩ, and R_L = 47 Ω.

For amp 1: R_i1 = 1.2 kΩ, A₁= 20, R_o1 = 820 Ω.

For amp 2: R_i2 = 270 Ω, A₂= 25, R_o2 = 390 Ω.

For amp 3: R_i3 = 100 Ω, A₃= 10, R_o3 = 82 Ω.

If the amplitude of the input signal is v_i = 0.5 V, find the amplitude of the amplified output singnal, v_o.

Answer